21152520120614 has 8 divisors (see below), whose sum is σ = 31941725014800. Its totient is φ = 10505278449016.

The previous prime is 21152520120541. The next prime is 21152520120623. The reversal of 21152520120614 is 41602102525112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35490805274 + ... + 35490805869.

It is an arithmetic number, because the mean of its divisors is an integer number (3992715626850).

Almost surely, 2^{21152520120614} is an apocalyptic number.

21152520120614 is a deficient number, since it is larger than the sum of its proper divisors (10789204894186).

21152520120614 is a wasteful number, since it uses less digits than its factorization.

21152520120614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70981611294.

The product of its (nonzero) digits is 9600, while the sum is 32.

Adding to 21152520120614 its reverse (41602102525112), we get a palindrome (62754622645726).

The spelling of 21152520120614 in words is "twenty-one trillion, one hundred fifty-two billion, five hundred twenty million, one hundred twenty thousand, six hundred fourteen".